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2a) Write a method countEvens that takes an ArrayList of String objects as input and returns...
java Write a generic method that takes an ArrayList of objects (of a valid concrete object...
java Write a generic method that takes an ArrayList of objects (of a valid concrete object type) and returns a new ArrayList containing no duplicate elements from the original ArrayList. The method signature is as follows: public static ArrayList UniqueObjects(ArrayList list) Test the method with at least 2 array lists of different concrete object types. Label your outputs properly and show the array lists content before and after calling method UniqueObjects
11) Write a method (including header and body) that takes as an input an array of...
11) Write a method (including header and body) that takes as an input an array of doubles and f three doubles containing the average, the maximum and the minimunm values of the input array. Test the program by calling the method from the main method. For example Input: 1 2 3 45 Output: 3 5 1 12) Write a Java method that takes a string as an argument and returns the reverse the string. Test the program by calling the...
(intro to java help?) Write a method manyStrings that takes an ArrayList of Strings and an...
(intro to java help?) Write a method manyStrings that takes an ArrayList of Strings and an integer n as parameters and that replaces every String in the original list with n of that String. For example, suppose that an ArrayList called "list" contains the following values: ("squid", "octopus") And you make the following call: manyStrings(list, 2); Then list should store the following values after the call: ("squid", "squid", "octopus", "octopus") As another example, suppose that list contains the following: ("a",...
Write a method named avgLength which takes an array of Strings as an input parameter and...
Write a method named avgLength which takes an array of Strings as an input parameter and returns a double. The method should calculate and return the average length of all the strings in the array (in java langauge)
//Java (Sort ArrayList) Write the following method that sorts an ArrayList: public static > void sort(ArrayList...
//Java (Sort ArrayList) Write the following method that sorts an ArrayList: public static > void sort(ArrayList list) Write a test program that does the following operations: 4. Creates an empty ArrayList of Integer elements; 5. Generates 20 integer values, drawn at random between 0 and 9 (included), and adds them to the array list; 6. Calls the method sort and prints both the original list, and the sorted one.
Write a method called printReverse() that takes a string and uses recursion to print the contents...
Write a method called printReverse() that
takes a string and uses recursion to print the contents of the
string in reverse order. The string itself should
not be reversed; it must be left in its
original form.
The method has the following header:
void printReverse(String s, int i)
where s is a reference to the string, and i is an integer
parameter that you may use as you see fit. You do not need
to code up this method as...
Add the following methods to the ArrayList class that we wrote during lecture. You may call...
Add the following methods to the ArrayList class that we wrote during lecture. You may call the existing methods in ArrayList if you want, but do not use anything from the built-in java.util.ArrayList class. 1. (3 pts) Write a new method named addAll(ArrayList anotherList) that adds all the elements in anotherList to the back of the calling list. Be sure to reallocate the data array if necessary. anotherList should not be modified. 2. (4 pts) Write a new method named...
Write a method public static ArrayList merge(ArrayList a, ArrayList b) that merges two array lists, alternating...
Write a method public static ArrayList merge(ArrayList a, ArrayList b) that merges two array lists, alternating elements from both array lists. If one array list is shorter than the other, then alternate as long as you can and then append the remaining elements from the longer array list. For example, if a is 1 4 9 16 and b is 9 7 4 9 11 then merge returns the array list 1 9 4 7 9 4 16 9 11...
Write a function with two input parameters: an array of numbers and the size of the...
Write a function with two input parameters: an array of numbers and the size of the array (the number of elements). The function should return the count of even numbers in the array. For example, if the input to the function is the array [3, 2, 45, 56, 12], the function would return the integer 3. Use the following function header: int countEvens(int nums[], int size) { }
Assume we already have an ArrayList of Integers called list. Write code that will add 1...
Assume we already have an ArrayList of Integers called list. Write code that will add 1 to each element of the list. For example, if the list originally contained 2, 4,-3, then it should contain 3, 5, -2 after the lines of code execute. Just write the necessary lines of code (not a whole method or program). Assume we already created the ArrayList and filled it with Integers.
11) Write a method (including header and body) that takes as an input an array of doubles and f three doubles containing the average, the maximum and the minimunm values of the input array. Test the program by calling the method from the main method. For example Input: 1 2 3 45 Output: 3 5 1 12) Write a Java method that takes a string as an argument and returns the reverse the string. Test the program by calling the...
Write a method called printReverse() that
takes a string and uses recursion to print the contents of the
string in reverse order. The string itself should
not be reversed; it must be left in its
original form.
The method has the following header:
void printReverse(String s, int i)
where s is a reference to the string, and i is an integer
parameter that you may use as you see fit. You do not need
to code up this method as...
Assume we already have an ArrayList of Integers called list. Write code that will add 1 to each element of the list. For example, if the list originally contained 2, 4,-3, then it should contain 3, 5, -2 after the lines of code execute. Just write the necessary lines of code (not a whole method or program). Assume we already created the ArrayList and filled it with Integers.
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